using System;
using L=Science.Physics.GeneralPhysics;

namespace Serway.Chapter46
{
	/// <summary>
	/// Example05: Recession of a Quasar
	/// A quasar is an object that appears similar to a star 
	/// and is very distant from the Earth. Its speed can be 
	/// determined from Doppler-shift measurements in the light 
	/// it emits. A certain quasar recedes from the Earth 
	/// at a speed of 0.55c. How far away is it?
	/// </summary>
	public class Example05
	{
		public Example05()
		{
		}
		private string result;
		public string Result
		{
			get{return result;}
		}
		public void Compute()
		{
			L.Velocity v = new L.Velocity();
			v.X = L.Constant.SpeedOfLightInVacuum*0.55;
			L.Length R = new L.Length();
			R.Magnitude = v.mPERs/L.Constant.HubbleConstantLightYear;
			result+=Convert.ToString(R.Magnitude)+" LightYear";            
		}
	}
}
